Determine the pH of 0.10 M NH3 solution. NH3 is a weak base with a Kb equal to 1.8x10-5 (round to the nearest whole number)
2 answers:
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Explanation:
1)
Mass of NaOH = m
MOlar mass of NaOH = 40 g/mol
Volume of NaOH solution = 1.00 L
Molarity of the solution= 1.00 M
A student can prepare the solution by dissolving the 40. grams of NaOH in is small volume of water and making that whole volume of solution to volume of 1 L.
Upto two significant figures mass should be determined.
2)
(dilution equation)
Molarity of the NaOH solution =
Volume of the solution =
Molarity of the NaOH solution after dilution =
Volume of NaOH solution after dilution=
A student can prepare NaOH solution of 1.00 M by diluting the 0.500 L of 2.00 M solution of NaOH with water to 1.00 L volume.
Upto three significant figures volume should be determined.